Warranty - Riello NXHM 04 Installation Manual

Please check the following before commencing start-up of the unit,
as these are important conditions of the Riello Warranty*
The manufacture supplied filter has been installed to the return to the monobloc.
The system should be flushed, this is especially important if the system is an old gas or oil system. Flushing should be
completed in accordance to BS7593.
Riello recommends a suitable heat transfer fluid is used to give a minimum frost protection of -12. In order to stop
bacterial growth, it is also recommended to use a suitable Biocide, if not included in the heat transfer solution. Or an
approved Anti Freeze device is used.
A 25lt buffer is Recommended for the 4-10kw units and a 40lt for the 12-16kw Riello heat pumps, In order to meet the
minimum system water open volume at all times.
The pipe work diameter should be sized in relation to the length of the pipework run, number of fittings and
components but should have an internal bore no less than 28mm copper pipework. Be aware that plastic pipework
tends to have a smaller internal bore and needs to be sized correctly.
The external monobloc should be installed on a base suitable for withstanding the weight of the unit and should be
level.
There shall be a proper means of disposal of the condensate, this should be via a drain or soak away.
The external monobloc unit should be positioned so that there is good air flow around the unit. The minimum
clearances are 300mm to the left, 600mm to the right, 300mm behind the unit and 1000mm in front on the 4-6kw
and 1500mm on the 8-16kw units.
The Terms and Condition should be referred to for further information and
manufacture literature should be referred to for further guidance.
As part of the commissioning process, it is important that the correct flow rates are achieved for the output of the unit.
Failure to do so, will result in poor performance and protentional faults. The flow rates required are specified below.
*Please be aware if the only the minimum flow rate is achieved through the unit the unit will not function to its full output.
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